ci: preview docs

Signed-off-by: msclock <msclock@qq.com>

.github/workflows/documentation-links.yml

@@ -0,0 +1,24 @@
+# https://github.com/readthedocs/actions/tree/main/preview
+
+name: readthedocs/actions
+
+on:
+  pull_request_target:
+    types:
+      - opened
+
+permissions:
+  pull-requests: write
+
+concurrency:
+  cancel-in-progress: true
+  group: ${{ github.workflow }}-${{ github.ref }}
+
+jobs:
+
+  preview-rtd:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: readthedocs/actions/preview@v1
+        with:
+          project-slug: ${{ github.repository }}

.readthedocs.yml

@@ -0,0 +1,51 @@
+# .readthedocs.yaml
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+# Required
+version: 2
+
+# Set the version of Python and other tools you might need
+build:
+  apt_packages:
+    - doxygen
+    - gcc
+    - g++
+    - git
+    - bash
+    - lcov
+    - openjdk-19-jre
+  os: ubuntu-22.04
+  tools:
+    python: '3.11'
+  jobs:
+    post_create_environment:
+      - >-
+        git clone
+        -c core.eol=lf
+        -c core.autocrlf=false
+        -c safe.directory="/tmp/vcpkg"
+        -c fsck.zeroPaddedFilemode=ignore
+        -c fetch.fsck.zeroPaddedFilemode=ignore
+        -c receive.fsck.zeroPaddedFilemode=ignore https://github.com/microsoft/vcpkg /tmp/vcpkg
+      - /tmp/vcpkg/bootstrap-vcpkg.sh
+      - /tmp/vcpkg/vcpkg --version
+      - pip install cmake ninja
+    pre_build:
+      - VCPKG_ROOT=/tmp/vcpkg cmake -S . --preset=x64-Debug-GNUC
+      - cmake --build out/build/x64-Debug-GNUC --parallel 8 --target ccov-all
+    post_build:
+      - cp out/build/x64-Debug-GNUC/cpp-scaffold_docs $READTHEDOCS_OUTPUT/html/ -r
+
+
+# Build documentation in the docs/ directory with Sphinx
+sphinx:
+  # Fail on all warnings to avoid broken references
+  fail_on_warning: true
+
+# Optional but recommended, declare the Python requirements required
+# to build your documentation
+# See https://docs.readthedocs.io/en/stable/guides/reproducible-builds.html
+python:
+  install:
+    - requirements: docs/requirements.txt